Email headers contain a wealth of information about an email's journey. Learn to read them for troubleshooting.
Key Header Fields
- From/To: Sender and recipient addresses
- Received: Trail of servers the email passed through
- Message-ID: Unique identifier for the email
- Authentication-Results: SPF/DKIM/DMARC pass/fail status
Reading the Received Chain
Read from bottom to top. Each "Received" header shows a hop in the email's journey.
Conclusion
Headers are your forensic tool for email issues. Learn to read them for faster troubleshooting.